Community Water System · PWS AS9310751
Aunuu ASG
Operator location Pago Pago, American Samoa - 24% of 253 violations are health-based (upper-third health share (> 23%)); groundwater source; 402 served per SDWIS.
- 402
- People served (this PWS)
- 253
- EPA violations (this PWS)
- 60
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Aunuu ASG standing, high SDWIS violation third
24% of 253 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 24% is upper-third health share (> 23%).
The verdict
Aunuu ASG sits in the upper third of the sitemap cohort by violation count (253), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (402; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 24% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- 253
- Total EPA violations on record
- 24%
- Health-based (MCL / treatment failure)
- 402
- People served by this PWS (SDWIS)
- N/A
- PFAS compounds detected (UCMR5)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- State
- Connections
- 59
- County
- Eastern District
- School/Daycare
- No
- MCL Violations
- 57
- Monitoring Violations
- 139
- Treatment Tech Violations
- 3
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 39 | 2021 |
| Coliform (TCR) | MR | 27 | 2015 |
| Total Haloacetic Acids (HAA5) | MR | 26 | 2025 |
| TTHM | MR | 26 | 2025 |
| Public Notice | Other | 19 | 2021 |
| Lead and Copper Rule | MR | 15 | 2023 |
| Consumer Confidence Rule | Other | 14 | 2022 |
| Coliform (TCR) | MCL | 10 | 2015 |
| Total Haloacetic Acids (HAA5) | MCL | 7 | 2021 |
| Gross Beta Particle Activity | MR | 7 | 2014 |
| E. COLI | MR | 3 | 2025 |
| Asbestos | MR | 3 | 2025 |
| Nitrate | MR | 2 | 2023 |
| Lead and Copper Rule | TT | 2 | 2012 |
| Endrin | MR | 1 | 2011 |
| Toxaphene | MR | 1 | 2011 |
| Dalapon | MR | 1 | 2011 |
| Diquat | MR | 1 | 2011 |
| Glyphosate | MR | 1 | 2011 |
| Di(2-ethylhexyl) adipate | MR | 1 | 2011 |
| Dinoseb | MR | 1 | 2011 |
| Hexachlorocyclopentadiene | MR | 1 | 2011 |
| Carbofuran | MR | 1 | 2011 |
| Heptachlor | MR | 1 | 2011 |
| Atrazine | MR | 1 | 2011 |
| LASSO | MR | 1 | 2011 |
| 2,3,7,8-TCDD | MR | 1 | 2011 |
| 2,4-D | MR | 1 | 2011 |
| 2,4,5-TP | MR | 1 | 2011 |
| Benzo(a)pyrene | MR | 1 | 2011 |
Violation Count vs. the National Corpus
Aunuu ASG has 253 recorded EPA violations, 88% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 12% carry more. 24% of this system's own violations are health-based (60 of 253), and it ranks unranked by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
253 Higher than most more violations than 88% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
Health-based violations on Aunuu ASG
60 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for AS9310751.
Sources: EPA SDWIS
Nationwide peers
253 violations · 402 served: nearest cross-state SDWIS matches.
Cross-state systems with comparable violation load
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
What to do with Aunuu ASG
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in American Samoa compares on the same EPA violation measures. American Samoa systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.